Saikat, ‘so called’ boyfriend of Stamford University student Rubaiyat Sharmin Rumpa, was grilled at the Detective Branch (DB) office.
DB officials began interrogation on Sunday morning.
Earlier on Saturday, DB police held Saikat over the death of Rubaiyat Sharmin Rumpa.
According to DB sources, Saikat is former BBA student of the same university. He was held after checking call list of Rumpa’s mobile phone. He made the last call on Rumpa’s phone.
Rumpa, a second-year English student of the private university in Siddheshwari area, was found dead on an alley near the building on Wednesday night.